Learn the DCS PLC System and Control Valve Current Loop. Use below links for PLC and DCS articles:- PLC Tutorials instrumentatio... DCS Tutorials instrumentatio... #PLC #DCS #CurrentLoop #Instrumentation
Shamsh Iqubal in case of pp two afr is used one for air supply to I to P and another for pneumatic positioner as main supply as it takes input as air and output it gives as air .